chore(deps): update dependency flexsearch to v0.8.212

Author: renovate[bot]

packages/core/package.json

@@ -75,7 +75,7 @@
     "chokidar": "^3.6.0",
     "clsx": "2.1.1",
     "copy-to-clipboard": "^3.3.3",
-    "flexsearch": "0.7.43",
+    "flexsearch": "0.8.212",
     "github-slugger": "^2.0.0",
     "hast-util-heading-rank": "^3.0.0",
     "hast-util-to-jsx-runtime": "^2.3.6",